netdev - Re: smsc911x_suspend crash (was: Re: [PATCH] ARM: shmobile: r8a7778: Add missing call to shmobile_init

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Message-ID: <20140814211712.GC2029@verge.net.au>
Date:	Fri, 15 Aug 2014 06:17:13 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Geert Uytterhoeven <geert+renesas@...der.be>,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	Magnus Damm <magnus.damm@...il.com>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	Kevin Hilman <khilman@...aro.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: smsc911x_suspend crash (was: Re: [PATCH] ARM: shmobile: r8a7778:
 Add missing call to shmobile_init_late())

On Thu, Aug 14, 2014 at 10:52:30AM +0200, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> (taking this to netdev for the crash in smsc911x_suspend())
> 
> On Thu, Aug 14, 2014 at 8:16 AM, Simon Horman <horms@...ge.net.au> wrote:
> > while this may be part of the puzzle my light testing shows
> > that suspend-to-ram does not appear to work with this patch applied.
> 
> Thanks for testing!
> 
> > My procedure is as followw.
> >
> > 1. Apply this patch on top of renesas-devel-v3.16-20140811
> > 2. make bockw_defconfig
> > 3. Select CONFIG_SUSPEND
> > 4. Update r8a7778-bockw.dts to include no_console_suspend in bootargs
> 
> Alternative:
> 
> echo 0 > /sys/module/printk/parameters/console_suspend

Thanks, I didn't know that.

> > 4. Boot and then:
> >
> >    i. echo enabled > /sys/devices/platform/sh-sci.0/tty/ttySC0/power/wakeup
> >    ii. echo mem > /sys/power/wakeup_count
> 
> Uh?
> 
> echo mem > /sys/power/state
> 
> > root@...ian:~# echo mem > /sys/power/wakeup_count
> > -bash: echo: write error: Invalid argument
> 
> I guess there's an "echo mem > /sys/power/state" here?

Yes, sorry about that noise. I had some stray commands in my test-run
and edited out the correct one.
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